One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Rock Hill you can determine when it's the best time to plant sweet peas by looking at the USDA zone info.

Planting Calendar for Sweet Peas

Frost tolerance for sweet peas:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since sweet peas are barely cold tolerant you can plant them just a tiny bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant sweet peas in Rock Hill is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant sweet peas and expect a good harvest is probably August. If you wait any later than that and your sweet peas may not have a chance to fully mature. You can get started a few weeks earlier by starting your sweet peas indoors.

Last Frost Date

The average date of last frost is March 15 in Rock Hill. You can expect an average low temperature of 10°F in the coldest months of winter.

It's important to remember that USDA zone info for Rock Hill may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Rock Hill there is a last frost after March 15 be ready to protect your sweet peas in the event of a late frost.

USDA Zone Info for Rock Hill

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Rock Hill

You may be interested in your other planting guides for Rock Hill.